Mercurial > repos > shellac > sam_consensus_v3
annotate env/share/doc/networkx-2.5/examples/subclass/plot_printgraph.py @ 0:4f3585e2f14b draft default tip
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author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """ |
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2 =========== |
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3 Print Graph |
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4 =========== |
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5 |
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6 Example subclass of the Graph class. |
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7 """ |
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8 |
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9 import matplotlib.pyplot as plt |
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10 import networkx as nx |
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11 from networkx import Graph |
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12 |
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13 |
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14 class PrintGraph(Graph): |
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15 """ |
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16 Example subclass of the Graph class. |
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17 |
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18 Prints activity log to file or standard output. |
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19 """ |
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20 |
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21 def __init__(self, data=None, name="", file=None, **attr): |
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22 Graph.__init__(self, data=data, name=name, **attr) |
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23 if file is None: |
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24 import sys |
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25 |
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26 self.fh = sys.stdout |
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27 else: |
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28 self.fh = open(file, "w") |
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29 |
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30 def add_node(self, n, attr_dict=None, **attr): |
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31 Graph.add_node(self, n, attr_dict=attr_dict, **attr) |
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32 self.fh.write(f"Add node: {n}\n") |
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33 |
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34 def add_nodes_from(self, nodes, **attr): |
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35 for n in nodes: |
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36 self.add_node(n, **attr) |
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37 |
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38 def remove_node(self, n): |
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39 Graph.remove_node(self, n) |
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40 self.fh.write(f"Remove node: {n}\n") |
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41 |
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42 def remove_nodes_from(self, nodes): |
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43 for n in nodes: |
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44 self.remove_node(n) |
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45 |
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46 def add_edge(self, u, v, attr_dict=None, **attr): |
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47 Graph.add_edge(self, u, v, attr_dict=attr_dict, **attr) |
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48 self.fh.write(f"Add edge: {u}-{v}\n") |
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49 |
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50 def add_edges_from(self, ebunch, attr_dict=None, **attr): |
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51 for e in ebunch: |
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52 u, v = e[0:2] |
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53 self.add_edge(u, v, attr_dict=attr_dict, **attr) |
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54 |
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55 def remove_edge(self, u, v): |
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56 Graph.remove_edge(self, u, v) |
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57 self.fh.write(f"Remove edge: {u}-{v}\n") |
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58 |
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59 def remove_edges_from(self, ebunch): |
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60 for e in ebunch: |
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61 u, v = e[0:2] |
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62 self.remove_edge(u, v) |
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63 |
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64 def clear(self): |
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65 Graph.clear(self) |
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66 self.fh.write("Clear graph\n") |
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67 |
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68 |
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69 G = PrintGraph() |
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70 G.add_node("foo") |
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71 G.add_nodes_from("bar", weight=8) |
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72 G.remove_node("b") |
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73 G.remove_nodes_from("ar") |
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74 print("Nodes in G: ", G.nodes(data=True)) |
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75 G.add_edge(0, 1, weight=10) |
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76 print("Edges in G: ", G.edges(data=True)) |
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77 G.remove_edge(0, 1) |
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78 G.add_edges_from(zip(range(0, 3), range(1, 4)), weight=10) |
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79 print("Edges in G: ", G.edges(data=True)) |
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80 G.remove_edges_from(zip(range(0, 3), range(1, 4))) |
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81 print("Edges in G: ", G.edges(data=True)) |
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82 |
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83 G = PrintGraph() |
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84 nx.add_path(G, range(10)) |
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85 nx.add_star(G, range(9, 13)) |
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86 nx.draw(G) |
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87 plt.show() |